A short-range wireless communication network may be established by direct communication between two or more wireless communication devices. A conventional cellular telephone includes an integrated short-range transceiver. The short-range transceivers of multiple wireless communication devices can be coupled together to form a short-range communication network without utilizing any wireless communication network supported by wireless service providers. The short-range communication network may be extended as additional devices come within range or consolidated as wireless communication devices leave the communication range. The short-range communication network is built upon the proximity of wireless communication devices with each other. data is disseminated between the wireless communication devices using a data message synchronization process. Messages may also be carried from one wireless network to another as the communication devices are carried by individuals.
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12. A method for the operation of a short-range communication network comprising:
setting a beacon identifier to a fixed pre-determined selected beacon identifier in a first wireless communication device having a short-range transceiver operating in an unlicensed frequency band;
transmitting the beacon identifier in a beacon signal using the short-range transceiver;
a plurality of different wireless communication devices receiving the beacon signal having the selected beacon identifier transmitted from the first wireless communication device;
establishing a first short-range mesh communication network with each of the plurality of different wireless communication devices wherein the first wireless communication device and each of the plurality of different wireless communication devices in the first short-range mesh communication network can communicate with each other using a bidirectional radio communication link; and
exchanging message data between all of the wireless communication devices in the first short-range communication network.
10. A programmable wireless communication device comprising:
a short-range transceiver;
a memory;
a non-volatile memory; and
a processor;
the non-volatile memory storing:
an application for the programmable wireless communication device to program a fixed pre-determined beacon identifier of the programmable wireless communication device;
a controller to cause the short-range transceiver to broadcast a beacon signal containing the beacon identifier in an unlicensed frequency band, and to cause the short-range transceiver to establish a short-range mesh communication network with a plurality of the different wireless communication devices that received the beacon signal containing the beacon identifier wherein each of the plurality of wireless communication devices in the short-range mesh communication network can communicate with each other;
the memory being configured to store message data wherein the controller is configured to transmit the message data to each of the plurality of wireless communication devices in the short-range communication network and to receive message data stored in the memory of each of the plurality of different wireless communication devices in the short-range communication network.
1. A communication system comprising:
a plurality of wireless communication devices each having:
a first transceiver configured to communicate with a wireless communication network;
a second short-range transceiver configured to operate in an unlicensed frequency band and to communicate other than with the wireless communication network;
a controller configured to control operation of the second transceiver; and
a data storage area;
wherein the second transceiver in a first of the plurality of wireless communication devices is configured to transmit a beacon signal containing fixed pre-determined beacon identification data portion to identify the first wireless communication device;
wherein the second transceiver in each of the remaining ones of the plurality of wireless communication devices is configured to detect the beacon signal from the first wireless device;
wherein the plurality of wireless communication devices form a short-range radio communication network without using the first transceiver in either of the first and second wireless communication devices to permit any of the plurality of wireless communication devices in the short-range radio communication network to have bidirectional communications with any of the others of the plurality of wireless communication devices in the short-range radio communication network.
2. The system of
3. The system of
4. The system of
5. The system of
6. The system of
7. The system of
8. The system of
9. The system of
11. The device of
13. The method of
14. The method of
15. The method of
16. The method of
moving the first wireless communication device out of range of the plurality of different wireless communication devices wherein the first wireless communication device is out of communication range with all of the wireless communication devices of the first short-range communication network;
receiving a beacon signal having the selected beacon identifier transmitted from a second wireless communication device different from the plurality of wireless communication devices in the first short-range communication network;
establishing a second short-range communication network with the second wireless communication device; and
exchanging message data between first wireless communication device and any wireless communication device in the second short-range communication network, including the second wireless communication device.
17. The method of
18. The method of
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This application is a continuation-in-part of U.S. application Ser. No. 12/616,958 filed on Nov. 12, 2009, which is a continuation-in-part of U.S. application Ser. No. 12/397,225 filed on Mar. 3, 2009, the entire disclosures and content of which are hereby incorporated by reference in their entirety.
1. Field of the Invention
The present invention is directed generally to wireless communication devices and, more particularly, to a system and method that allows the dynamic formation of short-range communication networks using direct communication between wireless communication devices.
2. Description of the Related Art
Wireless communication networks have become commonplace. A vast array of base stations is provided by a number of different wireless service providers. Wireless communication devices, such as cell phones, personal communication system (PCS) devices, personal digital assistant (PDA) devices, and web-enabled wireless devices communicate with the various base stations using one or more known communication protocols. While early cell phone devices were limited to analog operation and voice-only communication, modern wireless devices use digital signal protocols and have sufficient bandwidth to enable the transfer of voice signals, image data, and even video streaming. In addition, web-enabled devices provide network access, such as Internet access.
In all cases, the individual wireless communication devices communicate with one or more base stations. Even when two wireless communication devices are located a few feet from each other, there is no direct communication between the wireless devices. That is, the wireless devices communicate with each other via one or more base stations and other elements of the wireless communication network.
Some wireless service providers have included push-to-talk (PTT) technology that allows group members to communicate with each other using PTT technology. Thus, when one group member presses the PTT button, the communication from that individual is automatically transmitted to the communication devices of other group members. While this gives the appearance of direct communication between the wireless devices, the communications between group members are also relayed via one or more base stations as part of the wireless network.
Therefore, it can be appreciated that there is a need for wireless communication devices that can communicate directly with nearby wireless devices. The present invention provides this, and other advantages, as will be apparent from the following detailed description and accompanying figures.
The system described herein extends the normal operational features of conventional wireless communication devices. As described above, the conventional wireless communication device communicates with a wireless communication network base station using a first transceiver (i.e., a network transceiver). The extended capabilities described herein provide a second transceiver device that allows wireless communication devices to communicate directly with each other over a short distance. The wireless communication devices are illustrated as part of a system 100 illustrated in the system architecture in
A conventional wireless communication network 102 includes a base station 104. Those skilled in the art will appreciate that the typical wireless communication network 102 will include a large number of base stations 104. However, for the sake of brevity and clarity in understanding the present invention,
The base station 104 is coupled to a base station controller (BSC) 106. In turn, the BSC 106 is coupled to a gateway 108. The BSC 106 may also be coupled to a mobile switching center (not shown) or other conventional wireless communication network element. The gateway 108 provides access to a network 110. The network 110 may be a private core network of the wireless communication network 102 or may be a wide area public network, such as the Internet. In
For the sake of brevity, a number of conventional network components of the wireless communication network are omitted. The particular network components may vary depending on the implementation of the wireless communication network 102 (e.g., CDMA vs. GSM). However, these elements are known in the art and need not be described in greater detail herein.
Also illustrated in
As illustrated in
In addition to the conventional network transceiver components, the jump-enabled wireless communication devices illustrated in
As illustrated in
The dynamic formation of one or more short-range networks 116 allows communication between the wireless communications devices 120-128 independent of the wireless communication network 102. The short-range communication network 116 advantageously allows communication in settings where the wireless communication network 102 is not present or in a situation where the wireless communication network is unavailable. For example, the wireless communication network 102 may be unavailable during a power outage or an emergency situation, such as a fire, civil emergency, or the like. In contrast, the short-range communication network 116 does not rely on any infrastructure, such as cell towers, base stations, and the like. As will be described in greater detail below, the short-range communication network 116 may be extended as jump-enabled wireless communication devices move throughout a geographic location.
The wireless communication device 120 in
The wireless communication device 120 of
The wireless communication device 120 of
The wireless communication device 120 of
The various components illustrated in
In one embodiment, when the jump-enabled wireless communication device 120 comes within range of any other jump-enabled wireless communication device (e.g., the wireless communication device 122 of
In an exemplary embodiment, the short-range transceiver 176 may be designed for operation in accordance with IEEE standard 802.11, sometimes referred to as WiFi. Many modern wireless communication devices are equipped with WiFi and may be readily upgraded to support the functionality described herein. Because the wireless communication devices 120-128 all include WiFi capability, short-range communication networks 116 may be formed even though the wireless communication devices may be designed to operate with incompatible wireless communication networks 102. For example, the wireless communication device 122 may be configured for operation with a GSM implementation of the wireless communication network 102. The wireless communication device 124 may be configured for operation with a CDMA implementation of a wireless communication network 102. Even though the wireless communication devices 122-124 are incompatible with respect to the respective wireless communication networks 102, the wireless communication devices 122-124 may still communicate directly with each other via the short-range communication network 116. Thus, the wireless communication devices 120-128 may operate compatibly to form the short-range communication networks 116 even though the network transceivers 166 (see
In one embodiment, a jump-enabled wireless communication device operates in an “ad hoc” mode defined by IEEE 802.11, which allows devices to operate in an independent basic service set (IBSS) network configuration. In this embodiment, one or more jump-enabled wireless communication devices (e.g., the wireless communication devices 120-128) communicate directly with each other in a peer-to-peer manner using unlicensed frequency bands. Manufacturer specifications for Wi-Fi devices may indicate that the wireless communication device Wi-Fi range is approximately 300 feet. In practice, the actual range may be considerably less, such as a 100 foot range. In addition, those skilled in the art will recognize that the actual transmission range may vary from one wireless communication device to another and may vary dramatically depending on obstructions. For example, natural obstructions (e.g., terrain or vegetation) or man-made obstructions (e.g., buildings or other structures) will have an impact on the range of the short-range transceiver 176. Furthermore, those skilled in the art will appreciate that the operational range of the short-range transceiver 176 will dynamically vary during operation. For example, the user may begin operation in one room of a building but move to a different room during operation of the short-range transceiver 176. Thus, the range and area of coverage of a wireless communication device can be highly variable.
Although the operational range of jump-enabled devices can be more or less than 300 feet, jump-enabled wireless communication devices are generally designed for short-range communication capability.
In accordance with IEEE 802.11, two WiFi devices must be associated with each other to exchange data. This technique is well known in the use of personal computers where a WiFi connection may be established between a PC and a wireless router or wireless access point (WAP) at home, at the office, or some public location (e.g., an airport, coffee shop, and the like) that provides a wireless “hot spot.” In this conventional operation, the user of the PC must enable a process to seek out any nearby WiFi wireless router. When one or more wireless routers are detected, the user manually selects a wireless router with which to communicate. In a setting such as an airport, the WAP is typically unencrypted and broadcasts an identification in the form of a service set identifier (SSID). For example, the SSID in the Los Angeles International Airport may, for example, be broadcast as “LAX Wireless Service.”
In a home wireless network, the wireless router will also have an SSID (e.g., The Smith Family). In addition, a home wireless router may include known forms of encryption such as WEP, WPA-2, or the like. If encryption is selected, the wireless router will have an encryption key. For successful communication with an encrypted router, the PC user must select that router when viewing the list of available WiFi connections and provide the appropriate encryption key to match the encryption key for the selected wireless router.
In the system 100, each wireless communication device (e.g., the wireless communication devices 120-128) transmits a beacon signal with the same SSID, such as the SSID “JUMMMP” to identify the device as a jump-enabled wireless communication device. In addition, the beacon frame includes several other data fields such as a media access layer (MAC) address for source and destination. In the beacon frame, the destination MAC address is set to all ones to force other wireless communication devices to receive and process the beacon frame. The beacon frame used in the system 100 may also include conventional elements, such as a time stamp used for synchronization with other wireless devices, information on supported data rates, parameter sets that indicate, for example, transceiver operational parameters such as the IEEE 802.11 channel number and signaling method such as operation at the physical layer (PHY) and operation in a direct frequency spectrum (DSSS) or a frequency hopping spread spectrum (FHSS) operational modes. These conventional WiFi parameters are known in the art and need not be described in greater detail herein.
In addition, since there is no access point, all jump-enabled wireless communication devices take on the responsibilities of the MAC layer that controls, manages, and maintains the communication between the jump-enabled wireless communication devices by coordinating access to the shared radio channel and the protocols that operate over the wireless medium. In an exemplary embodiment, the MAC is implemented in accordance with IEEE 802.2. At the PHY layer, the transceiver may operate in a DSSS or a FHSS operational mode. Alternatively, the PHY layer may be implemented using infrared transceivers. The IEEE 802.11 standard defines a common operation whether devices are using the ad hoc or the infrastructure mode. The use of the ad hoc mode only affects protocols, so there is no impact on the PHY layer. Thus, the wireless communication device 120 may operate under IEEE 802.11a at 5 gigahertz (GHz) under IEEE 802.11b/g at 2.4 GHz, or IEEE 802.11n, which operates at both 2.4 GHz and 5 GHz. Those skilled in the art will appreciate that the wireless communication device of the system 100 may be readily adapted for operation with future versions of IEEE 802.11.
In an alternative embodiment, the wireless communication devices 120-128 may be configured in accordance with IEEE WiFi Direct standards. WiFi Direct allows any wireless communication device in the short-range communication network 116 to function as the group owner. WiFi Direct simplifies the process of establishing a communication link. For example, the WiFi protected set up allows a communication link to be established by entering a PIN or other identification or, simply pressing a button. As will be described herein, the jump-enabled wireless communication devices actively seek to establish links with other jump-enabled devices to automatically establish a short-range communication network 116.
In yet another alternative embodiment, illustrated in
Depending on the physical proximity of the wireless communication devices 120-124, there may be one or more short-range communication networks 116 formed. In the example of
The wireless communication device 124 is within range of the wireless communication device 122, but is not within range of the access point 140. In one embodiment, the wireless communication device 124 may be become part of the short-range communication network 116a via the wireless communication device 122. In this embodiment, the wireless communication device 122 functions as a “repeater” or relay to relay information between the wireless communication device 124 and other parts of the short-range communication network 116a. In another embodiment, a second short-range communication network 116b is formed with the wireless communication devices 122-124. In this exemplary embodiment, the wireless communication device 122 is part of both short-range communication networks 116a-116b. The wireless communication device 122 may simultaneously be a member of both short-range communication networks 116a-116b or may be logically connected to both short-range communication networks 116a-116b by alternately switching between the short-range communication networks 116a-116b.
The access point 140 is coupled to the network 110 in a conventional manner. This can include a wired or wireless connection directly to the network 110 or via an intermediate network gateway, such as those provided by an Internet Service Provider (ISP).
As discussed in detail in co-pending U.S. application Ser. No. 12/616,958, filed on Nov. 12, 2009 and assigned to the assignee of the present application, the user of a jump-enabled wireless communication device (e.g., the wireless device 120) may use the web-browsing capability of the wireless communication device to access the individual jump web page 202 for the individual with whom contact has just been made to learn more about that individual. Alternatively, the user of a jump-enabled wireless communication device (e.g., the wireless device 120) may use the web-browsing capability of the wireless communication device to access the issuer's own individual jump web page 202 to store information for the individual with whom contact has just been made. A contact list 204, which is typically a portion of the individual jump web page 202 is configured to store contact information. Similarly, the individual jump web page 208 of the social network 206 can include a contact list 210 to store contact information.
Storage of contact information requires access to the network 110. In the embodiment of
In an alternative embodiment, access to the network 110 may be provided via another jump-enabled wireless communication device. For example, in
Similarly, in the embodiment of
As previously noted, the system 100 provides for the dynamic formation and rapid change in the topography of the short-range communication networks 116. For example,
Alternatively, the wireless communication device 128 may become part of the short-range communication network 116d using the wireless communication device 126 as a relay to the access point 140. If, at a later time, the wireless communication device 128 comes within range of the access point 140, a wireless communication link 214 is formed there between. At that point in time, the short-range communication network 116c effectively ceases to exist since the wireless communication devices 126-128 are now part of the short-range communication network 116d.
The wireless communication device 120 may be part of the short-range communication network 116d by virtue of the short-range communication link 142 coupling the wireless communication device 120 to the access point 140. If the wireless communication device 120 comes within range of the wireless communication devices 122-124, wireless communication links 216-218 will be formed to couple the wireless communication devices 120-124 and thereby dynamically form a short-range communication network 116e. At this point in time, the wireless communication device 120 may simultaneously be part of the short-range communication network 116d and the short-range communication network 116e. Alternatively, the wireless communication devices 122-124 may become part of the short-range communication network 116d via the wireless communication device 120.
If the wireless communication device 120 subsequently moves out of range of the access point 140, the wireless communication link 142 is broken. Therefore, there will no longer be overlap between the short-range communication networks 116d-116e. The wireless communication device 120 would remain part of the short-range communication network 116e so long as it remains within range of the wireless communication device 122, the wireless communication device 124, or both. Thus, those skilled in the art will appreciate that short-range communication networks are dynamically formed, modified, and dissolved as the wireless communication devices move in and out of range with each other and central points, such as the access point 140. Those skilled in the art will also appreciate that the short-range communication networks 116 may be formed, modified, and dissolved without the presence of the access point 140.
At a start 300, shown in
At step 302, the wireless communication device enables an instance of a WiFi Manager that controls the WiFi communication hardware (i.e., the short-range transceiver 176 of
The Broadcast Beacon Process is initiated to inform wireless devices of the presence of a jump-enabled wireless communication device. In step 304, the beacon signal of the jump-enabled wireless communication device is altered such that the SSID will contain a key word identifying the wireless communication device as part of a jump network (e.g., SSID=JummmpNet). Those skilled in the art will appreciate that IEEE802.11 provides for user-specified data to be broadcast as part of the beacon signal. In a current implementation of IEEE802.11, a total of 32 characters are available for user-defined purposes. In step 304, the beacon signal is also altered to include a local user name and may, optionally, include a unique alphanumeric identifier and additional flags that may be used for applications utilizing the Jump API. Application programs can use the Jump API to insert application-specific data into the beacon signal. For example, a social networking application program can use the Jump API to insert information such as age, sex, and interests of the user that will be broadcast in the beacon signal and used by other wireless communications devices running the social networking application program. In another example, a sports application program can insert sports scores or updates into the beacon signal. If there are too many scores to fit into the allocated space in a single beacon signal, the cores can be changes with each beacon signal.
In step 306, the wireless communication device 120 periodically transmits the beacon signal. The beacon signal may be set to broadcast continuously or at a predetermined interval, such as, by way of example, every ten seconds. Those skilled in the art will appreciate that the interval used to broadcast the beacon signal may be altered based on system metrics. The beacon broadcast process ends at step 306 with the short-range transceiver 176 continuing to broadcast the beacon signal.
While the jump-enabled wireless communication device 120 is broadcasting its own beacon signal, it also listens for the beacon signals broadcast from other jump-enabled wireless communication devices (e.g., the wireless communication device 122). The Scan Process illustrated in
In step 312, the Jump API controls the WiFi Manager to activate a device driver in the wireless communication device to scan for available WiFi connections. In step 314, the jump-enabled wireless communication device creates a list of results returned from the scan in step 312. The list of results may be stored in the data storage area 184 (see
In decision 316, the controller 182 (see
If there are new jump-enabled wireless communication devices in the list, the result of decision 316 is YES and, in step 318, the wireless communication device 120 connects to the new jump client device.
If there are no new jump devices detected as a result of the scan in step 312, the result of decision 316 is NO and, in decision 320, the wireless communication device 120 determines whether it is already connected to another jump-enabled client device. If the wireless communication device is not already connected to a jump-enabled client device, the result of decision is NO and, in step 322, the jump-enabled wireless communication device will attempt to connect to any jump client device in the list (created in step 314) or else attempt to establish a connection with the first open WiFi connection from the list created in step 314. Alternatively, the jump-enabled wireless communication device may attempt to connect to the open WiFi connection having the strongest signal in step 322.
If the wireless communication device is already connected to a jump client, the result of decision 320 is YES. If the wireless communication device has connected to a new jump client in step 318, or connected to a WiFi device in step 322, or is already connected to a jump client device from decision 320, the wireless communication device 120 broadcasts stored data to any client device(s) to which it is able to connect in step 324. As will be described in greater detail below, the system 100 is capable of distributing messages throughout a short-range communication network 116 and may even distribute messages from one short-range communication network to another.
In step 334 the controller 182 stores the merged message data in the data storage area 184 and in step 324, the merged message data is broadcast to other clients' jump-enabled wireless communication devices that form part of the short-range communication network 116. Thus, when two jump-enabled wireless communication devices detect each other and form a short-range communication network 116, the wireless communication devices exchange message data with each other such that the message data is synchronized between the two devices. If a third wireless communication device joins the short-range communication network 116, its message data is exchanged between the two wireless communication devices that have already formed the network. Thus, the wireless communication devices within a particular short-range communication network 116 are effectively synchronized with the respective message data.
As will be described in greater detail below, the message data exchanged between wireless communication devices in the short-range communication network 116 include a main header that transmits a list of messages that may be intended for users of the wireless communication devices within the particular short-range communication network as well as messages for other jump-enabled wireless communication devices that are not part of the particular short-range communication network. Messages to be exchanged between wireless communication devices in a short-range communication network 116 may be categorized based on the nature of the message. In an exemplary embodiment, messages may be categorized as Public Messages, Group Messages, Direct Messages, and Status Messages. Public Messages may be transmitted to anyone within range of the wireless communication device (e.g., the wireless communication device 120). This may include emergency messages, messages broadcast from a retailer, and the like. Group Messages are intended for a specific group or organization, such as a scout troop or employees of a particular company. Direct Messages are intended for a specific individual. In addition, the wireless communication device 120 may transmit Status Messages, which can include, by way of example, a list of other wireless devices currently in the particular short-range communication network 116, a list of recent wireless communication devices in the particular short-range communication network, a list of other short-range communication networks in which the wireless communication device 120 was recently a member, or the like. The data exchange process illustrated in
In one embodiment, all public messages and group messages may be contained in one file and all direct messages contained in a separate file. The messages may be formatted as standard text files or xml files that have a main header and individual message headers, as illustrated in
The main header for all messages may contain at least the following:
This message will help maintain synchronization between the wireless communication devices without excess exchange of data or unnecessary processing by any of the wireless communication devices. For example, the last synch date/time may indicate that a recent synchronization has occurred and is unnecessary at the present time.
Alternatively, synchronization data may be provided in the form of a data flag in a status byte of the beacon signal. As previously noted, the beacon signal permits the transmission of a limited amount of user-defined data. A status data byte may contain one or more data flags. One data flag may be a New_Data flag to indicate that a particular wireless communication device (e.g., the wireless communication device 120) as new data. The wireless communication device 120 may synchronize its message data with other wireless communication devices within the particular short-range communication network 116. Following the synchronization, the New_Data flag may be reset.
Those skilled in the art will appreciate that other conventional data synchronization techniques may be used. For example, the wireless communication devices within a particular short-range communication device 116 may simply synchronize with each other on a periodic basis. For example, the wireless communication devices within a particular short-range communication network 116 may synchronize every ten minutes or some other selected time period. The re-synchronization period may be dynamically altered based on factors such as the number of wireless communication devices within a particular short-range communication network 116. Furthermore, the addition of a new wireless communication device into the particular short-range network 116 may force a re-synchronization process even if the time period has not yet expired for the other ones of the wireless communication devices.
Individual message headers will contain at least the following:
Because of the mobile nature of the wireless communication devices, any particular wireless communication device can be present in one or more short-range communication networks 116 and may readily leave one short-range wireless communication device and readily join another short-range wireless communication device.
In an alternative embodiment, the wireless communication device 128 acts as a repeater to relay communications such that the wireless communication device 122 is effectively part of the short-range communication network 116f. It should be noted that Direct Messages (i.e., messages intended for a specific recipient) may be passed along a number of different wireless communication devices in a number of different short-range communication networks 116. Security measures, such as encryption, prevent viewing of messages by any wireless communication device (or any access port of router) except the intended recipient.
To consider the dynamic nature of the short-range communication networks 116, consider
As
The example illustrated in
When a large number of conventional wireless communication devices are in physical proximity, such as a sporting event or even in rush-hour traffic, a conventional communication network is often overwhelmed because many wireless communication devices are attempting to connect to the same base station. Thus, too many conventional mobile communication devices in proximity can be a debilitating situation. In contrast, the system 100 can actually take advantage of the presence of a large number of wireless communication devices because a large number of devices will facilitate the movement of messages independent of the conventional service provider network. Thus, the system 100 can facilitate rather than debilitate communication in the presence of a large number of mobile communication devices. For example, a message generated by one user in rush-hour traffic will be quickly relayed to many other wireless communication devices in the same rush-hour traffic. Thus, messages may move quickly up and down a roadway. In addition, some of the wireless communication devices will become part of short-range communication networks in other locations near the roadway. Thus, the message spreads up and down the roadway using the wireless communication devices in automobiles on the roadway and moves away from the roadway as automobiles enter and leave short-range communication networks adjacent to or near the roadway. The system 100 could move a message from, by way of example, Orange County to Los Angeles using a variety of short-range communication networks in the manner described above.
As previously discussed, messages may be categorized in several categories, such as Public Messages, Group Messages, Direct Messages, and Status Messages). In addition, a priority category may be created to disseminate emergency messages. The example of
A different emergency message scenario is illustrated in
In another example application of the system 100, a business may utilize the short-range communication networks 116 to disseminate business information in the form of messages, coupons, advertisements, and the like. This is illustrated in
In another alternative embodiment, the user of a wireless communication device 120 may express personal preferences for shopping. For example, the user of the wireless communication device 120 in
Those skilled in the art will appreciate that other user preferences may be supplied in the form of a user preference profile. In this embodiment, the profile may include information, such as age, business and recreational interests, and the like. Based on the preference profile, the access point 140 can provide business messages customized for an individual user.
The system 100 described above exchanges messages between a number of wireless communication devices. In the example of a shopping mall, there may be hundreds of messages generated that are distributed through hundreds of other phones. Those skilled in the art will appreciate that such a large potential cache of messages requires message management. In one embodiment, the controller 182 (see
Those skilled in the art will appreciate that the memory capacity of wireless communication devices generally increases significantly with each new model or generation of devices introduced to the public. Although the description herein has focused on text messages, increases in storage capacity of the data storage area 184 may allow the dissemination of voice messages or even video messages. The message dissemination occurs in the manner described above. It is only the type of message that differs in this scenario. One advantage of the system 100 is that messages can be delivered even if the recipient wireless communication device is not powered or is temporarily out of range of any other wireless communication devices. This feature is advantageous in an emergency situation. For example, firefighters typically cellular communication devices with a PTT technology that allows any one firefighter to push the button and talk to other firefighters in a designated communication group. However, if one or more firefighters are temporarily out of range of the transmitting PTT device, those firefighters will not receive the broadcast. In contrast, the system 100 can disseminate voice messages throughout all group members. Thus, a firefighter that was temporarily out of communication will resynchronize the data storage area 184 upon reconnection to any of the wireless communication devices within the firefighter group and thereby receive the original message.
Thus, it can be appreciated that the wireless communication system described herein provides a highly dynamic network in which a large number of wireless communication devices may be coupled together in a dynamic fashion to create a large number of short-range communication networks 116 and to permit individual users to come and go from any particular short-range communication network.
While the system has been described herein with respect to Wi-Fi (i.e., IEEE 802.11), other short-range communication devices, such as Zigbee, or the like may be satisfactorily employed with the system 100.
The foregoing described embodiments depict different components contained within, or connected with, different other components. It is to be understood that such depicted architectures are merely exemplary, and that in fact many other architectures can be implemented which achieve the same functionality. In a conceptual sense, any arrangement of components to achieve the same functionality is effectively “associated” such that the desired functionality is achieved. Hence, any two components herein combined to achieve a particular functionality can be seen as “associated with” each other such that the desired functionality is achieved, irrespective of architectures or intermedial components. Likewise, any two components so associated can also be viewed as being “operably connected”, or “operably coupled”, to each other to achieve the desired functionality.
While particular embodiments of the present invention have been shown and described, it will be obvious to those skilled in the art that, based upon the teachings herein, changes and modifications may be made without departing from this invention and its broader aspects and, therefore, the appended claims are to encompass within their scope all such changes and modifications as are within the true spirit and scope of this invention. Furthermore, it is to be understood that the invention is solely defined by the appended claims. It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as “open” terms (e.g., the term “including” should be interpreted as “including but not limited to,” the term “having” should be interpreted as “having at least,” the term “includes” should be interpreted as “includes but is not limited to,” etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases “at least one” and “one or more” to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles “a” or “an” limits any particular claim containing such introduced claim recitation to inventions containing only one such recitation, even when the same claim includes the introductory phrases “one or more” or “at least one” and indefinite articles such as “a” or “an” (e.g., “a” and/or “an” should typically be interpreted to mean “at least one” or “one or more”); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of “two recitations,” without other modifiers, typically means at least two recitations, or two or more recitations).
Accordingly, the invention is not limited except as by the appended claims.
Karmis, Christos, Simon, David Brett, Linder, Lloyd Frederick, Jabara, Gary B., Chun, Eric Keith, Gharibjanians, Gharib, Gharibjanian, Varag Ishkhan, Davis, Bryon C.
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